Patents by Inventor Paul W. Thompson

Paul W. Thompson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Digital conferencing method and arrangement
    Patent number: 4416007
    Abstract: A method and arrangement is disclosed for providing a digital conference capability for subscribers of a time division multiplex (TDM) communication system. Each conferee's pulse code modulation (PCM) signal is assigned one of N conference time slots of the TDM system. The arrangement serially stores in memory the PCM signals of N-1 time slots. Circuitry serially generates the sum of the previously stored N-1 time slot PCM signals concurrently with the serial writing into memory of the PCM signal of each time slot. During each time slot a composite PCM conference signal is formed by combining the PCM signal of that time slot with the summed PCM signal and distributed to the conferees assigned to that time slot.
    Type: Grant
    Filed: November 20, 1981
    Date of Patent: November 15, 1983
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Donald D. Huizinga, Paul W. Thompson